johnson



. gattina-gratas @sind @ffice JOHN C. JOHNSON, OF hPHlLAELPHbA, PENNSYLVANIA.

' Letters Patent No. 73,726, dated January 28, 1l368.

IMPROVEMENT IN SODA-FOUNTAINS.

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TO ALL WHOM IT MAY OONCERN:

Be it'known that I, J'OIIN C. JOHNSON, of the city of Philadelphia, in the county of Philadelphia, and State of Pennsylvania, haveiuvented a new and useful Improvement in Soda-Fountains; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in whichv Figure 1 isa diametrical section,throng` the fountain, adapted for receiving the movable bottom.

Figure 2 4is a similar view, snowing the bottom applied to the fountain.

Figure 3 is a section through fig. l, in the horizontal plane indicated by red line, 11;, showing the internal elliptical plate for sealing the .bottom of the fountain.`

Figure 4 is a bottom view of the fountain.

Figure 5 is a perspective view of the -bottomportion of the fountain, showing the insertion ofthe elliptical sealing-plate. v

Similar letters of reference indicate corresponding parts in`the several figures. A'

This invention relates to an improvement on the construction of portable vessels which are designed for containing soda-water and other aereted mineral-waters under considerable pressure, by which improvement such vessels can be conveniently construeted'in amore durable and substantial manner than hitherto, and after .being lined on their interior surfaces, to prevent corrosion., the openings through them, which admit of the application of such lining, can be hermetieally sealed, and made perfectly secure against leakage.

The nature of my invention consists ain `constructing a fountain of one piece of meta-l, with an opening through one end,- of such size as to admit of access to its interior surface, for lining it with some non-corrodiblc enamehfwhich opening is of such form as to admit of the insertion through it of an oblong plate, which, when properly adjusted, and fitted upon an internal shoulder surrounding the opening, and firmly clamped ir. place, willeectually seal said opening against the escape of the contents of the fountain, as will be hereinafter described. y

vTo enable'others skilled in the art to understand my invention, I will describe its construction and operation.

Y The fountain 'A B, shown in figs. 1 and 2, is cast, or otherwise constructed, of one piece of metal, with a dome-shaped top and a contracted bottom, terminating in a daring stand or foot-piece, B, surrounding an elliptical opening, e. This opening-through the l ttom of the fountain should be made of such size as to allow access to the interior of the fountain, for lining its surface with any suitable enamel, or other` substance which will prevent corrosion.' Surrounding the elliptical opening c is a shoulder or oiset, g, which is adapted for receiving upon it and forming a seat for a plate, C, which corresponds in shape to the hole c, but which is slightly larger than this hole, as shown in figs. 2 and 3. This plate C being made larger in area than the hole c,'which it is designed to cover, it is necessary to maketliis hole and its sealing-plate of -an oblong shape, so that the latter can be inserted. through the hole edgewise, as shown in iig. 5, and then adjusted and fitted into vits seat. In the centreof the bottom side of the elliptical plate C is an elevation, e, which is drilled out and screw-tsppsd, for receiving a short square-headed screw, 6. This screw is designed-for drawing the plate C down firmly upouits seat, and holding it there, for which purpose a circular external plate, D, (or a transverse bar)v is applied to the bottom ofthe fountain, through which plate screw b is passed, and the two plates C D clamped firmly in their places, as shown in iig. v2. To make this joint perfectly tight, without the necessity of grinding the imping'ing surfaces, a packing of rubber, or other suitable substance, is introduced between the plate (l and its seat, as shown in g. 2. This packing will be compressed when the screw b is set up tight, and o perfectly tight-joint will be made, which will prevent the escape of gas or liquid from the bottom of the fountain.

p y It will be seen from the above description that the greater the pressure within the fountain, the iirmer will the cover C be held upon its seat. This arrangement of the plate C upon the inside of the fountain, requires but a. single screw, 4, applied as described, for holding it in place, by removing which screw access can be had to the' interior of the fountain whenever it is not charged. The lower end of the draw-off pipe, shown in red lines, iig. 2, is depressed below or on a level with the upper surface of plate C, just over a, recess made in this plate, sothat the fountain can be completely exhausted of its liquid contents.

Having described my invention. what T ela. i as new, and desire to secure by Letters Patent, is- A soda-water fountain, which is constructed with a contracted perforated bottom, and a flanged foot-piece,

vB, .1nd provided with a removable bottom, C, fitted within said fountain, upon o. seat which surrounds an oblong openingfc, and held iny place by means of a.4 screw, b, and external cap or bar, D, substantially es described.

f 'Y JOHN o. JOHNSON. Witnesses:

WM. H. Jonsson', Aue. Q. Nnwsnmr. 

